Chlorophyll-a molecule 叶绿素a分子
The structure of the chlorophyll molecule is known. It consists of porphyrin.
叶绿素的分子结构已经搞清，它是由卟啉组成的。
Summer leaves are green because they are full of chlorophyll, the molecule that captures sunlight converts that energy into new building materials for the tree.
夏天的树叶是绿色的，因为它们富含叶绿素，这种捕捉阳光的分子可以将这些能量转化为新的树木生长材料。
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